Shuttle-driving mechanism for narrow-ware looms



3 Sheets-Sheet l May 1, 1928.

E. R. HOLMES SHUTTLE DRIVING MECHANISM FOR NARROW WARE LOOMS Filed April ll. 1.927

May 1, 1928. 1,668,150

E. R. HOLMES SHUTTLE DRIVING llCl-IANISM FOR NARROW WARE LOOMS Filed April 11. 1,927 3 Sheets-Sheet 2 May l, 1928.

E. R.' HOLMES SHUTTLE DRIVING MECHANISM FOR NARROW WARE LOOMS Filed April 1l. 1927 I5 Sheets-Sheet 5 v//lfrxlan fior/19a- Patented May 1, 1928i UNITEDV STATES PATE-NT OFFICE.

ELBRIDGE R. HOLMES, OF WORCESTER, MASSACHUSETTS, ASSIGNOB TO CROMPTON v& XNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION T MASSACHUSETTS.

SHUTTLE-DRIVING MEoHaNIsM- ron l:uARROW-WARE Loomis.

`Application inedliprn 1i, 1927. serial No. 132,987.

`This invention relates to4 driving mecha! nism for looms designed for simultaneously f weaving a plurality of strips of tape7 ribbon and other narrow fabric.

In such looms it is customary to mount the shuttles permanently `on the lay and to move all of the shuttles by positive'actuating mechanism carried on the lay and par-` takfing of the swinging movementthereof.

It is the general object of my inventionto improve the driving connections `to the shuttle operating mechanism on the lay, so'that accurate timing maybe more readily accom` plished and so that the parts may be lmore easily constructed and more readily accessible for adjustment or repairs. .My.inven tion further relates(` to arrangements and combinations of part-s whichwill bey hereinafter described and more particularly point ed out in the appended claims. v A preferred form of the invention is shown in the drawings in which; i

Fig. llis a partial front elevation vof a narrow ware loom, partly inse'ction, and

showing my improvements embodied'tllere'in Fig. 2 is an end elevation", lookingin the direction of the arrow2 inFig. 1; y y

Fig. 3 is a longitudinal sectional fclevatitm, taken along the line 3-3 in Fig. 2"; i

Fig.` 4 is a detail sectional end elevation, taken valong the line 4-4 in Fig. 1;' y Fig. 5 is a detail end'view. partlyinsec tion, and taken along the line 5-`5 in Fig. l;

. and

. Fig. 6 is a View similar `to butfshowing the parts in a different position.

. Referring to the drawingsrll havejshown mounted on a sleeve 14. secured in the end.

of the sword and extending through a bearing 15 supported on the loom frame 10.

The sleeve 14 is extended beyond the bearing end and is provided with a bracket 16 fixed on the outer end thereof and providing a support for a pair of sprocket wheels 18 and 19, which aresec'ured to each other and rotate together. i

A chain 20 is secured to the larger sprocket Wheel 19and extends upward and around a guide "wheel 21 mounted in one end ofthe lay 11. vThe upper end of the chain 20 is fastened tothe end of a sliding rack bar 22, engaged by a series of pinions 23 by which the shuttles24 (Fig. 2) are actuated.

A motor M is mounted onthe loom and is connectedby a pinion 25 to a large gear 26 rotatable on'a bearing shaft 27 and having ay smaller gear 28 associated therewith. The gear I28 engages a large gear 29 (Fig."2)

having a cross shaft 30 (F ig. 3) pivotedin a bearing of the web thereof. i

A crank arm 3l is secured `to one end of the cross shaft 30 and a gear 32 is secured to the other end and engages `a gear 33`fixed in position butconcentric with the axis of the vgear k29. i p

The gear 29 is mounted on-a shaft 35 su ported in vfixed bearings 36 and 37 (Fig. 1 The crank arm `31 isprovided with acrank pin 38 (Fig. 3) positioned in a long slot 39 in a lever arm 40. The arm 40 is provided with an elongated hub 41 loose on the shaft 35 and having a flange 42 at one end thereof. A bevel gear 45 (Fig. 3) is mounted on a hub or sleeve 46 loose on the shaft 35 and having a flange 47 engaging the flange 42 previously described. The flange 42 is provided with arcuate slots 48 and is connected `and is provided with a crank pin or roll"v54 positioned in aslot or guideway 55 extendmgftransversely in adiainond shapedslid ing membri/1256 ig. 1) "having bearings 57 slidable on a fixed shaft 58.

As the shaft 51 is rotated` the crank pin i 54 gives a reciprocating motion to the slidf ing member 56, and the planetary gearing provided 1n the driving connection to the shaft 51 causes the speed of this reciprocat'- ing movement to be greatly varied at different points in its cycle of movement. In fact the combination is such that. atone point a pronounced dwell of the sliding member 56 is produced, although the driving gears 26, 28 and 29 are continuously rotated.

The sliding member 56 is provided with a lug 60 (Fig. 1) through which extends a threaded rod 61 secured by nuts 62 in said 1-ug 60 and connected by turn buckles 63 and 64 to additional threaded rods 65 and 66.

The sliding member' 56 is also providedv with a lug 7 0 (Fig. A4) in its upper portion, which is offsetto form a recess 71 for a guide bar 72 (Fig. 1), mounted on a bracket 7 3 fixed to the loom side 10. The guide bar 72 prevents angular .movement of the sliding member 56 about the axis of the shaft 58, and holds the threaded rod 61 accurately in alignment with the axis ol the bearing sleeve 14.

Having thus described my invention. it is believed that the operation and advantages thereof will be readily apparent. The driving mechanism herein described provides continuous rotation of the crank arm 31 about the axis of the cross shaft SO-and also Y about the axis of the gear shaft 35. This combination o f motions provides an irregular rotating motion through the arm 4() to the bevel gear 45 and thence to the crank arm 53 which reciprocates the sliding member 56. The flanges 42 and 47 provide a convenient means for angularly adjusting the bevel gear 45 and thus varying the timing of the shuttle motion, and the connections from the sliding member 56 to the driving chains are conveniently located and readily accessible. The entire construction has been found particularly effective in actual use. y

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein Idisclosed otherwise than as set forth in the claims, but

Y What I do claim is l 1. In a'narrow ware loom, a lay, bearings for said lay, a. shuttle actuating rack on said lay, actuating mechanism for said rack, and

connections from said mechanism to said rack, substantial parts of which connections are disposed at and along the bearing axis of said lay and are longitudinally movable in alignment therewith, and said actuating mechanism including a sliding member to which said connections are attached in alignment with said axis, a shaft having an axis fixed'n spaced relation to said lay axis, means to reciprocate said sliding member on said shaft, and means to prevent angular movement of said member.

2. The combination in a narrow ware looml as set forth in claim 1, in which said sliding member is of substantially diamond shape,

with bearing lugs at the two sides thereof and a guide-way at the top thereof, said guide-way cooperating with a fixed guide bar to keep said member from turning on said fixed shaft. i

3. The combination in a narrow ware loom as set forth in claim 1,- in which said actuating mechanism includes a variable speed driving member, a crank arm engaging said sliding memberand means providingr angular adjustment between said driving inem- 'i ber and said crank arm.

' 4. The combination ina narrow ware loomY as set forth in claim 1, in which said actuating means includes a crank arm continuously driven butat variable .angular speed, a second crank arm engaging said sliding mem-V ber, anda transmitting device between said two crank arms constructed to provide angular adjustment between said arms. .y

5. The combination in a narrow ware loom as set forth in claim 1, in which said actuating mechanism includes a crank arm engaging saidsliding member, a bevel gearrotatable with said arm, a second bevel gear mesh- Y ing vwith said first gear, a fixed shaft on which said second gear is loosely mounted, a sleeve on saidY shaft, means to give said sleeve an irregular oscillatingV movement, and a two-part fianged connection between said sleeve and said second bevelY gear, the two arts of -said flanged connection being angu arly adjustable vrelative to each other.

e In testimony whereof I have hereunto affixed my signature.

ELBRIDGE n. HOLMES. 

